1529 results about "Waterstop" patented technology

The invention relates to an underground (underwater) building waterproof device, and in particular to a vertical water-stop structure for a concrete engineering expansion joint as well as a manufacturing and construction methods for the same. The vertical water-stop structure comprises a deformation sheet and channel steel, and is characterized in that the deformation sheet is longitudinally arranged, one half is pre-buried in first-stage concrete, the other half is bulged out of a concrete section and externally arranged in a rectangular channel steel opening, and the channel steel is provided with a fixing element and filled with maltha; the surface of the channel steel opening and the section of the first-stage concrete are provided with asphalt felts at the both sides of the deformation sheet, the exposed fixing element is detached after asphalt is cooled, and then second-stage concrete is arranged. According to the vertical water-stop structure disclosed by the invention, the problem of water seepage of a water conservancy project due to the differential settlement or diastrophism of a stratum can be solved, and moreover, labour can be saved and construction period can be shortened.

The invention discloses a karst grouting reinforcement water-stop constructing method, which is to construct according to sizes of karst caves by adopting a principle of from big to small regarding a certain area, construct by adopting a principle of from outside to inside for the karst caves with the same size, and construct by adopting a principle of from the bottom to the top in a vertical direction. On the basis of the construction principles, the method comprises the following steps of: (1) forming grouting holes by adopting a core drill; (2) forming construction exhaust and drainage pressure relief holes; (3) inserting grouting pipes into the grouting holes, wherein the grouting pipes comprise steel pipes, grouting shock pipes and sleeve valve pipes; (4) cleaning the holes, wherein when the step (3) is completed, the grouting pipes are cleaned with clean water; (5) grouting; and (6) drawing out the grouting pipes after the grouting is completed, and blocking the grouting holes with cement mortar or concrete. By adopting the constructing method, the pertinence to karst caves is strong, the grouting quantity is small, the engineering work amount is small, the cost is low, and the effect of filling and reinforcing is good.

The invention relates to a ring-shaped inner supporting structure used in a deep peat soil deep foundation pit. The ring-shaped inner supporting structure comprises a supporting system, a waterproof curtain, a slope unloading system and a support replacement system and is characterized in that the supporting system is divided into a support pile, a top beam, a ring beam, an angle brace and a communication beam, the top of the support pile is provided with the reinforced concrete top beam; the top beam forms an external structure of the foundation pot; the ring-shaped inner supporting structure is formed in a way of combining the ring beam, the angle brace and the communication in the middle; and the overall plan for the support of the foundation pit engineering is formed by using the combined support and the pit wall waterproof curtain together with the means of large-area soil-discharge de-loading and the like. With the adoption of the ring-shaped inner supporting structure, the problems of small anchor tensile force, easily-happened creep deformation, large deformation as well as invasion and harassment to the adjacent property of an anchor rope in the common design in peat soil are solved generally, and the disadvantages that common inner supporting types such as lattices, trusses and beams seriously affect the earthworks digging and transporting as well as the construction of an underground structure are overcome; and furthermore, the engineering cost is reduced furthest, and the earthworks digging and transporting as well as foundation construction periods are shortened.

The invention relates to a pit supporting structure and a construction method thereof. The pit supporting structure comprises pit supporting row piles, water and soil stopping curtains and lateral row piles, wherein the pit supporting row piles are long and short cast-in-place concrete thin-wall pipe piles at intervals; the water and soil stopping curtains and the lateral row piles are cement mixing piles; the water and soil stopping curtains are a row of mutually engaged cement mixing piles; the lateral row piles are a plurality of rows of bidirectionally engaged cement mixing piles; the water and soil stopping curtains are arranged on one side of pit supporting row piles corresponding to the periphery of the pit; and the lateral row piles are arranged at the bottom of the pit on one side of the pit supporting row piles corresponding to the pit. The technical scheme has the effects that a basement structure is convenient to construct, the pit construction period is shortened and the construction cost is saved.

The invention relates to a construction process of a concrete form water-stopping occlusion pile. The construction process comprises the following steps: constructing a plain concrete pile, and using a special occlusion form to form cambered grooves; and constructing a reinforced concrete pile, wherein concrete automatically flows into the cambered grooves of the plain concrete pile at the moment, thereby realizing the occlusion of the plain concrete pile and the reinforced concrete pile to form a curtain so as to achieve the purposes of water stopping and water retaining. Compared with the prior art, the invention has the advantages that the construction cost is greatly saved, the construction cycle is shortened and the water retaining quality is improved because the reinforced concrete pile and the plain concrete pile are matched for use; based on the occlusion effect of the cambered surfaces of the concrete, good occlusion and water-stopping effects between new and old concrete surfaces are achieved, and the construction quality is easy to control; and in addition, the application range is wide, different drilling machines can be used for forming pores in different water-bearing strata, and the predetermined water-stopping effect can be achieved as long as the pore forming quality meets the requirements of the specification.

The invention discloses a tunnel waterproof and water-draining system and a construction method thereof. The tunnel waterproof and water-draining system comprises a water draining layer, a transition layer, a waterproof layer, a transverse water draining pipe, a central water draining pipe and the like, and the water draining layer, the transition layer and the waterproof layer are located between a tunnel primary support and a secondary lining. The water draining layer comprises water-permeable shotcrete, a longitudinal water draining pipe, an annular water draining pipe and a waterstop strip, the longitudinal water draining pipe, the annular water draining pipe and the waterstop strip are fixed to the outer surface of the primary support to carry out water draining partitioning on the primary support, and the water-permeable shotcrete is sprayed in each water draining area. The annular water draining pipe and the central water draining pipe are connected through the transverse water draining pipe, and finally the tunnel water draining system is formed. The transition layer and the waterproof layer are formed by shotcrete with different grades and used for waterproofness of a tunnel. According to the tunnel waterproof and water-draining system and the construction method thereof, the water draining pipes and the water-permeable shotcrete form a tunnel stereoscopic water draining passage, the water draining effect of the tunnel is good, the tunnel waterproof and water-draining system and the structure of the tunnel are integrated, and the long-term service performance is good.

The invention relates to building construction methods, particularly to a foundation post-pouring belt template constructing method, which includes the following steps: a) pouring concrete stripes on the two sides of the post-pouring belt along the position line of the post-pouring belt after the completion of the foundation waterproof protective layer construction; b) supporting a waterstop steel plate quick and easy closing-up mesh along the side line of the post-pouring belt after the lower layer reinforcing bars of the foundation base plate are bound; c) fixing the reinforcing bar mesh pieces at the lower part of the waterstop steel plate; d) mounting the waterstop steel plate; e) welding the upper part reinforcing bar mesh pieces on the waterstop steel plate and placing the waterstop steel plate upper part quick and easy closing-up mesh; f) binding the upper layer reinforcing bars of the foundation base plate, fixing the waterstop steel plate upper part quick and easy closing-up mesh and mounting the upper part guard of the post-pouring belt; and g) pouring foundation concrete. By adopting the quick and easy closing-up meshes for the post-pouring belt construction joint, the surface poured with the concrete is uneven, so that the complicated conventional procedures for dismounting template and surface dabbing are avoided, the project quality and the construction progress are ensured, the construction wastes are reduced, and the civilized construction management is facilitated.

The invention relates to a construction method for a jacking structure of a pipe jacking work well. The construction method mainly comprises the construction steps of 1 cushion layer and back base wall constructing; 2 rail installing; 3 jack installing; 4 hole water stopping system installing; 5 pipe joint and jacking iron hoisting. The construction method has the advantages that disassembly and assembly are convenient, the construction efficiency is high, friction between a rail and a pipe joint can be reduced, auxiliary guide positioning can be supplied to the pipe joint and has the better economic and technical benefit.

The invention discloses a prestressed concrete precast pile. The prestressed concrete precast pile comprises a precast pile body with a square cross section, wherein the precast pile body comprises two end plates, a pile body and prestressed reinforcements, the pile body is arranged between the two end plates, and the prestressed reinforcements are arranged in the pipe body and connected with the two end plates; bulge rib which longitudinally extends to an end and a first groove which longitudinally extends and penetrates through the end are arranged on an outer side surface of the precast pile body; and a second groove and a third groove which are corresponding to positions of the bulge rib and the first groove respectively, matched in shape and size and longitudinally extend and penetrate through an end of the precast pile body are formed in one outer side surface which is not adjacent to the outer side surface. According to the prestressed concrete precast pile, the construction is convenient, the engineering cost can be reduced, the water stopping effect is enhanced, and the prestressed concrete precast pile has good bending and shearing resistance.

The invention relates to a novel pile-forming method of a cement-soil stirring pile. The method comprises the following steps: measuring and putting lines to determine pile position; putting a long spiral drill in place, and adopting the long spiral drill to drill a hole to determine the accurate position of a pile, loosen a hardpan and eliminate underground barrier; backfilling to the opening of the hole, or reversing and lifting the drill; drilling by a long spiral stirring pile drill while pumping and stirring serum to a designed hole bottom elevation; during returning upwards, guniting while stirring to the designed elevation, and then stirring repeatedly and guniting to form a pile; after finishing stirring pile construction, making use of the long spiral stirring pile drill to drill the stirring pile to form holes; and finally, inserting slope-protection piles used in steel reinforcement cage construction after concrete grouting to form an entire curtain. The novel pile-forming method has the advantages that a long spiral stirring pile is adopted to lay a foundation for the smooth construction of slope-protection piles; the renovated long spiral drill can drill in harder soil stratum, sand stratum and gravel stratum, thereby reaching the designed depth and diameter; and the integral curtain with occlusive slope-protection piles and cement-soil piles not only supports foundation pits, but also realizes effective water stopping.

A water stopping and infiltration-proof structure for a lotion spray nozzle, which is accomplished by adopting a water-stopping flange that is integrated with the cover top and is expanded from the top of the straight shaft tube, together with female and mate threading that are moved outwards along with the spray nozzle's bottom rim and the integrated cover's rim. This will enable the water-stopping flange to wipe off water drops on the piston shaft surface, and prevent water on the integrated cover top from infiltrating into the shaft tube.

The invention relates to a waterproof structure of new and old concrete construction interface flexible seam. Wherein, one end of waterproof band is adhered on the oil concrete surface, while another end is inserted into new construction; the waterproof band is around with stuffing material; and expansion bars are laid on the stuffing material; and the embedding material is laid on the expansion bars. The invention has better waterproof effect, to improve the construction quality, and it can be used in underground construction or ground construction that needing waterproof property.

In the embodiment of the present invention, the water-stop curtain is formed on the outside of the foundation pit wall by the cement mixing pile and the cast-in-place pile being occluded, making full use of the bending resistance performance of the cast-in-place pile and the water-stop performance of the cement mixing pile, so that the operation is safe and the water-forming Reinforced concrete piles are neat and regular; cement mixing piles are used to occlude casing piles to form a water-stop curtain, which can effectively prevent water seepage, water leakage and quicksand in traditional foundation pits, and can effectively prevent collapse, necking and other types of punching and drilling The quality of piles is a common problem; compared with traditional underground diaphragm walls and bored occlusal piles, the construction speed is faster, the cost is lower, and the economic benefits are obvious; the cement mixing piles are constructed first to form the constraints of casing piles and avoid the casing piles. The problem of diameter expansion in soft soil layers; the use of casing piles for support, and the use of cement mixing piles to consolidate and harden the soil, reduce the excavation of earthwork and the impact on the surrounding geology, and reduce the impact of construction on the surrounding environment Impact and environmental pollution, green construction.

The invention discloses a concrete foundation slab restoring method for a preformed water collecting well for higher underground hydraulic pressure, and relates to the technical field of building construction. The method comprises the following construction steps: (1) fabricating a water lowering pipe, wherein the lower section of the water lowering pipe is coated with a filter screen and a bottom filter screen is arranged at the bottom end of the water lowering pipe; (2) placing the water lowering pipe into the water collecting well, placing a water pumping pipe into the water lowering pipe for water pumping, pumping out the water lowering pipe filled with underground water, and performing flash set concrete pouring to the foundation slab in the water collecting well except the water lowering pipe, and performing continuous water lowering during pouring; (3) when the poured concrete achieves certain strength, stopping water lowering, withdrawing the water pumping pipe of the pump, and plugging the water lowering pipe by adopting a concrete cylinder, a coarse sand packing layer and a rubber water-seal piston from up to down; (4) performing flash set concrete pouring to the upper section of the rubber water-seal piston in the water lowering pipe. During concrete foundation slab restoring process for the preformed water collecting well, the method can efficiently solve the problems of construction difficulty and incapability of ensuring the restoring quality caused by over high underground hydraulic pressure.

The invention discloses a test system for the water tightness test of a tunnel deformation joint waterstop, which comprises two steel tanks mounted, in a sealed manner, at two sides of a waterstop to be tested, a steel structured test bench, an atmospheric pressure test bench, a hydraulic pressure test bench, an air compressor, a remote-distance full-automatic observing and reading apparatus and a safety protection device. The test device of the invention can be used for the water tightness test of a plurality of waterstops, realize random opening displacement and shear displacement accurately, and simulate the stress condition of deformation joint waterstop structure under different working conditions by applying atmospheric pressure in balloon to a tested object through the atmospheric pressure test bench and applying hydraulic pressure to the steel tanks through the hydraulic pressure test bench to simulate seawater pressure. The system and the method are suitable for the test of OMEGA and GINA waterstops as well as expandable waterstop.

The invention discloses a mortise type prefabricated comprehensive pipe gallery longitudinal connector. The mortise type prefabricated comprehensive pipe gallery longitudinal connector comprises prefabricated pipe gallery sections (1), longitudinal prestress ribs (2) and waterstop rubber belts (3), wherein each prefabricated pipe gallery section (1) comprises a top plate (4), side plates (5) and a bottom plate (6). Tenon-and-mortise components which are matched with each other are arranged at the two ends of each pipe gallery section. During on-site construction and splicing, every two adjacent pipe gallery sections are matched with each other according to the tenon-and-mortise relationship, the waterstop rubber belts are reasonably arranged on joints, then prestress is applied through the longitudinal prestress ribs for tensioning, and thus an integral structure is formed by a prefabricated pipe gallery. According to the mortise type prefabricated comprehensive pipe gallery longitudinal connector, the good mechanical property and waterproof performance of the mortise type connector are utilized, the prestress ribs are used for tensioning, the waterstop rubber belts are used for preventing water, and thus the structural integrity of the prefabricated pipe gallery is improved. Abundant structural forms of the prefabricated comprehensive pipe gallery longitudinal connector are provided, and convenience is provided for further development of the structure of the prefabricated comprehensive pipe gallery.

The invention provides a mould support method of a foundation pit basement haunch shearing wall. The method includes the following steps: S1 integrally molding a basement base plate and an upper turning shearing wall arranged on the upper surface of the basement base plate in pouring mode and embedding reinforcing bar heads on the basement base plate; S2 building a brick base film on the outer side of the upper turning shearing wall and embedding a plurality of connection pieces in the brick base film; S4 welding a plurality of water stopping screws on the stretching ends of a plurality of connection pieces; S6 fixing a single side mould plate on the extending ends of the plurality of water stopping screws; and S8 building a plurality of inclined supports used for supporting the single side mould plate from the inside of the single side mould plate between the steel bar heads and the single side mould plate. Compared with the existing double side mould support method, the mould support method is simple to operate. Due to the fact that only the single side mould plate is supported on the inner side of the haunch shearing wall, the method is less is required construction space, low in construction cost, small in construction difficulty and short in construction period.

The invention discloses a steel pipe pile locking notch structure and a water-stopping method of a steel pipe pile cofferdam by using the structure. The notch-locking structure comprises steel pipe piles and locking notches, wherein the steel pipe piles are arranged at intervals, each locking notch is arranged between two adjacent steel pipe piles, each locking notch comprises a female locking notch and a male locking notch, the male locking notch is I-shaped steel, the female locking notch is a steel pipe which is provided with a slit along the axial direction, and an I-shaped steel web plate is inserted into the slit. When the locking notch structure is used for leak stoppage, clay is pounded into the cavities of the locking notches, and reinforcing steel bars are inserted to carry out compaction processing for the clay. The invention relates to an effective locking notch structure and the water-stopping method thereof which are disclosed specially for solving the problem of difficult water prevention and leak stoppage of the locking notches in the steel pipe pile cofferdam.

The invention discloses a vertical joint waterproofing node of an exterior wall, which belongs to a building structure. Particularly, the invention aims to provide the vertical joint waterproofing node of the exterior wall which has the advantages that the construction speed is high, water retaining grooves are left in the abutted seam of two prefabricated exterior walls, and the waterproofing performance is good. The vertical joint waterproofing node of the exterior wall comprises a first prefabricated exterior wall (1) and a second prefabricated exterior wall (2), and is characterized in that an abutted seam between the side joint of the first prefabricated exterior wall (1) and the side joint of the second prefabricated exterior wall (2) is a micro expansion mortar layer (3). In addition, the abutted seam between the side joint of the first prefabricated exterior wall and the side joint of the second prefabricated exterior wall is 14-16mm.

The invention discloses a spliced chamber cofferdam for repair of canal lining projects. The cofferdam is in an I shape can comprises top end cofferdams and a middle cofferdam, wherein the top end cofferdams are matched with the cross section of a canal in shapes and located at the two ends of the upstream and the downstream, and the middle cofferdam is arranged between the two top end cofferdams and located in the center of the canal. The cofferdams are formed by splicing a plurality of chamber bodies in the direction of water flow, every two chamber bodies connected in the direction of the water flow are communicated with each other, hydraulic doors used for opening or closing a water flow channel is arranged on the chamber bodies located at the top ends, the adjacent chamber bodies are connected with each other through lock catches and are provided with waterstops, bottom plates of the chamber bodies which are located at the center of the canal and are in contact with the bottom of the cannel can be disassembled, and a pedestrian path leading to the bottom of the canal is arranged at the tops of the chamber bodies of the middle cofferdam. The spliced chamber cofferdam for canal lining repair does not need a pile foundation, is stable without a root, and cannot damage canal lining concrete and water-stopping materials under the canal lining concrete. The spliced chamber cofferdam is convenient to assemble, disassemble, store, transport and construct, good in safety, capable of being repeatedly utilized, and particularly suitable for repair and replacement of the canal lining concrete of large water conveyance projects and the water-stopping materials under the canal lining concrete.

A cryogenic material transfer system incorporates a pipe-in-pipe configuration with a nanoporous or microporous insulating layer filling the annulus between the inner and outer pipe. The insulating layer is of sufficient flexibility to absorb and expansion or contraction of the inner pipe due to the flow of cryogenic material therethrough. For longer transfer systems a bulkhead is provided between adjacent pipe joints. Intermediately of the pipe joints an additional bulkhead may be employed to provide additional sealing or water stops and for providing provide additional load transfer. A fiber optic sensor system is installed in the annuals between the inner and outer pipe.

A waterstop, 10 or 11, for restricting or preventing the flow of water across the joints of foundation elements 8, such as between or along individual diaphragm wall panels or between or along individual secant wall piles. The present invention also relates to a method of installing a waterstop at or near the joints between adjacent foundation elements. The waterstop consists of one or more longitudinal strips, 1 or 2, of hydrophilic material, wherein the or each hydrophilic strip extends vertically along the interface between adjacent foundation elements, from a position at or near the top of the foundation elements, to a position at or near the base of the elements.

The invention discloses a treatment method for grouting a sand-layer foundation on the condition of flowing water, comprising the following steps: 1. adopting a spindle swing rig to process a plurality of grouting holes which are partially overlapped on the strengthened sand-layer foundation; 2. inserting a grouting pipe into the grouting holes and injecting grouting slurry which is formed by the mixing of mud or two materials of cement and mud to the sand-layer foundation on the condition of flowing water from the grouting pipe; 3. directly injecting pure cement slurry into the same one drilling hole or re-adopting the spindle swing rig to process a plurality of grouting holes which are partially overlapped at the position where a first batch of slurry is grouted after the slurry is precipitated and cured, and then inserting the grouting pipe and injecting the pure cement slurry; and 4. using a waterstop to block the grouting holes after the slurry is injected to each grouting hole. Compared with the pure cement slurry, the treatment method for the grouting of a sand-layer foundation on the condition of flowing water has low cost, good flowability and permeability, high concretion rate, simple technology equipment, and convenient operation.

The invention discloses a pitched roof concrete construction method which is characterized in that a double-sided die sealing method is adopted to carry out construction on a pitched roof of which the slope is greater than or equal to 20 degrees; by bracing a bottom die and a top die of the pitched roof, concrete is poured to form a constraint under the slope condition; a short reinforcement is used as a bracket between the bottom die and the top die of the pitched roof; the short reinforcement has a diameter of 22 to 25 mm; the top die and the bottom die are connected into one whole body by split bolts; the split bolts have diameters of 14 to 16 mm; the split bolts are arranged at intervals of 250 to 300 mm; water stop rings are arranged in the middles of the split bolts; the water stop rings have diameters of 40 to 50 mm; reinforcement split heads are arranged on the upper surface of the bottom die for placing an upper negative reinforcement skeleton; sectional pouring and tamping are adopted in the pouring process of concrete, and a die plate at the upper part of the pitched roof is sealed step by step from bottom to top along the pouring progress of concrete.